A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Numerical analysis of buried trench in screening surface vibration
Abstract In practical engineering, open trenches would be covered by soil or plate for greenery and safety reasons, which inevitably turns them into buried trenches. It is necessary to reassess the screening efficiency of these buried trenches. A plane strain model is then established to describe wave propagation in ground. The influences of geometrical parameters normalized by Rayleigh wavelength (L R) are investigated, followed by a simplified design formula to estimate the screening capacity of buried trenches. Results show that the buried depth and trench depth play dominant roles in screening effect whereas the influence of trench width is small. Furthermore, four kinds of extending plates mounted on top of buried trenches are considered. It can be found that extending plates would significantly increase the screening performance of the barrier system. The source- and receiver-oriented extending plate are found to be the more effective measures and make a more contribution to wave screening when buried depth is around 0.2–0.3L R.
Highlights The screening performance of buried trenches is quantitatively studied. The complex wave process near buried trenches is qualitatively illustrated. A simplified design formula of buried trenches is developed. Various extending plates mounted on top of buried trenches are introduced.
Numerical analysis of buried trench in screening surface vibration
Abstract In practical engineering, open trenches would be covered by soil or plate for greenery and safety reasons, which inevitably turns them into buried trenches. It is necessary to reassess the screening efficiency of these buried trenches. A plane strain model is then established to describe wave propagation in ground. The influences of geometrical parameters normalized by Rayleigh wavelength (L R) are investigated, followed by a simplified design formula to estimate the screening capacity of buried trenches. Results show that the buried depth and trench depth play dominant roles in screening effect whereas the influence of trench width is small. Furthermore, four kinds of extending plates mounted on top of buried trenches are considered. It can be found that extending plates would significantly increase the screening performance of the barrier system. The source- and receiver-oriented extending plate are found to be the more effective measures and make a more contribution to wave screening when buried depth is around 0.2–0.3L R.
Highlights The screening performance of buried trenches is quantitatively studied. The complex wave process near buried trenches is qualitatively illustrated. A simplified design formula of buried trenches is developed. Various extending plates mounted on top of buried trenches are introduced.
Numerical analysis of buried trench in screening surface vibration
Feng, Shijin (author) / Li, Jianping (author) / Zhang, Xiaolei (author) / Chen, Zhanglong (author) / Zheng, Qiteng (author) / Zhang, Dongmei (author)
2019-08-15
Article (Journal)
Electronic Resource
English
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